GIVING BRAINLIST.

36

Step-by-step explanation:

+ + = 36

= 1 x 1 (= 1) x 1 = 1

= 2 x 2 (= 4) x 2 = 8

= 3 x 3 (= 9) x 3 = 27

27 + 8 + 1 = 36

Hope this helps :)

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18